Question about ViewSonic PJD6381 PROJ XGA DLP 24001 1024X768 2500LUMEN PJD6381 PJD6381 Projector

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Blotches screen Hi I have had the projector for 3 years very impressive the last few weeks 3/4 blotches have appeared on the lens not sure what it is any ideas please? could it be the lamp needs changing?

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Some Viewsonic DLP projectors have this issue. It happens when the DMD chip goes bad. You need to replace the DMD chip. Google "Viewsonic DMD chip replacement". This is not localized to Viewsonic projectors.

Posted on Sep 15, 2014

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The problem may be from power cord. call a service center for checking the power cord.

Posted on May 04, 2013


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Posted on Jan 02, 2017

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I have sanyo projector model PDG-DSU20E. Few white spots appeared on the right side of the screen. Gradually the spots has filled the right side about 1 feet is width till bottom of the screen. Now few...

1,white spots appeared on screen,means the DMD is broken,you need a new DMD.
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This is a common problem on a faulty Mainboard of a Projector.

Not much you can do about it except repair or replace the Mainboard

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Black spot on projector screen

Hope there's a dust/scratch in your Projector lens face.
Try it by cleaning your lens face of your Projector and see.

Thanks for using

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Hi i am having problems with the projector it was going well for the last year that i have it but up to a week ago i have been getting tiny white dots appearing on the screen from the projector. i have...


I noticed you have a DLP projector. I have a Optoma EzPro 756 which is also a DLP projector.
I notice white "blobs" on the screen when there is a black screen. It is caused by dust getting into the optical block not the lense. If you are comfortable with opening up the projector, you could gently blow out the optical area with compressed air, GENTLY so you don't dislodge any components, and see if that helps. I seems to be a common problem with DLP projectors a few years old. If there are sharp focused dots on the screen then most likely, it could be some pixels starting to go bad like dead pixels on a computer screen. That problem is pretty much irreversible.

Hope this helps,

Feb 20, 2011 | Acer X 1130 3D DLP Projector

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Sony VPL-HS50, any viewing (TV, DVD) a spread of blue appears on various parts of the screen, generally contained to the sides but from top to botom. Just recently a large yellow blotch appeared in the...

If this projector is an LCD (liquid crystal display), your LCD probably gone.This usually happens after a period of time with an LCD projector.Try cleaning the LCD or take it to your Sony dealer. yours faithfully Zkhan

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2 Answers

Optoma HD65 bulb only 108 hrs old having difficulty starting up

Use the warranty! since you anly had it for 8 weeks, and the waaranty last for one year, go back with it and get it repaired or get a new bulb. A buld last at least 2500 hours, in eco mode it last for over 3000 hours.

Good luck to you

Dec 17, 2008 | Optoma H30 Multimedia Projector

1 Answer

Yellow band on the edge of screen

Hi chucri

This is most definitely not a lamp problem.

If a yellow colour in either stripes or blotches occur it is a blue LCD polarizer that needs replacement.

May 16, 2008 | Sanyo PLC-SP20N Multimedia Projector

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NEC VT-47 picture problem

Hi there

This is unfortunately not the bulb or the lens that causes these blotches , but the LCD's.

It is normally only one LCD panel that has burnt and then need replacement.

I would suggest you have this replaced at an authorised dealer as this is quite a tricky process !

Apr 14, 2008 | NEC VT47 Multimedia Projector

1 Answer

VT45 Projector: Blue pixels throughout screen

If the problem is what I describe as a blue haze over the entire image projected, I was told this is a defect in the cable - we have a Dell Video Projector 2300 - and it takes only a dell VGA cable.

So, the problem is in the cable - solution is replace cable.

Feb 28, 2007 | NEC VT45LPK Projector Lamp for VT45

1 Answer

Dark Picture


If the Lamp condition is okay then check the FE lens just next to the lamp in the projector after removing the lamp out of prj. replace if that is burnt.otherwise replace Lamp.


Nov 13, 2006 | NEC VT460 Multimedia Projector

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